package com.itheima.reggie.service.impl;/**
 * 功能描述
 *
 * @author 唯硕
 * @date 2022/09/20  20:47
 */

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.itheima.reggie.dto.DishDto;
import com.itheima.reggie.entity.Dish;
import com.itheima.reggie.entity.DishFlavor;
import com.itheima.reggie.mapper.DishMapper;
import com.itheima.reggie.service.DishFlavorService;
import com.itheima.reggie.service.DishService;
import org.apache.ibatis.annotations.Lang;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.util.ArrayList;
import java.util.List;
import java.util.stream.Collectors;

/**
 *@ClassName DishServiceImpl
 *@Description TODO 菜品类
 *@Author 唯硕
 *@Date 2022/9/20 20:47
 *@Version 1.0
 */
@Service
public class DishServiceImpl extends ServiceImpl<DishMapper, Dish> implements DishService {
    @Autowired
    private DishFlavorService dishFlavorService;

   //新增菜品同时保存对应口味数据
    @Transactional
    public void saveWithFlavor(DishDto dishDto) {
        //保存菜品的基本信息到菜品表dish
        this.save(dishDto);
        Long id = dishDto.getId();//菜品id

        //菜品口味
        List<DishFlavor> flavors = dishDto.getFlavors();
        flavors = flavors.stream().map((item)->{
            item.setDishId(id);
            return item;
        }).collect(Collectors.toList());

  dishFlavorService.saveBatch(flavors);
    }

    //更新菜品同时保存对应口味数据
    @Transactional
    public void updateWithFlavor(DishDto dishDto) {
        //更新菜品的基本信息到菜品表dish
         this.updateById(dishDto);
        //清理当前菜品对应口味数据--dish_flavor表的delete操作
        LambdaQueryWrapper<DishFlavor> queryWrapper = new LambdaQueryWrapper<>();
        queryWrapper.eq(DishFlavor::getDishId,dishDto.getId());
        dishFlavorService.remove(queryWrapper);

        // 添加当前提交过来的口味数据--dish_flavor表的insert操作
        List<DishFlavor> flavors = dishDto.getFlavors();
        dishFlavorService.saveBatch(flavors);
       flavors = flavors.stream().map((item)->{
            item.setDishId(dishDto.getId());
            return item;

        }).collect(Collectors.toList());


    }
    @Override
    public DishDto getByIdWithFlavor(Long id) {
        Dish dish = this.getById(id);
        DishDto dishDto = new DishDto();
        BeanUtils.copyProperties(dish,dishDto);

        LambdaQueryWrapper<DishFlavor> queryWrapper = new LambdaQueryWrapper<>();
        queryWrapper.eq(DishFlavor::getDishId,dish.getId());
        List<DishFlavor> list = dishFlavorService.list(queryWrapper);
        dishDto.setFlavors(list);

        return dishDto;
    }


}
